Missing Traktor Pro 4 in Native Access

I already had a demo version of Traktor Pro 4 installed on my PC when I bought a Traktor Kontrol S3 and registered its HW serial number in Native Access. Since then, I can use the installed Traktor Pro 4 as full version without any problems. However, when I wanted to update to the leatest release, I realized that Native Access only offers me Traktor Pro 3 but not 4. I have no idea what else to do, all products seem to be successfully registered.